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T. A. DOBBINS. MACHINE FOR SBPARATING LAMINATED PACKS; 22. Patented June 28,1898.

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T. A. DOBBINS. MACHINE FOR SEPARATING LAMINATED PACKS. No. 606,522. Patented June 28, 1898.

(No Model.)

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THOMAS A. DOBBINS, OF MARTINS FERRY, OHIO.

Machine FORSEPARATING LAMlNATED PACKS.

SPECIFICATION forming part of Letters Patent No. 606,522, dated June 28, 1898.

Application filed September 9, 1897. Serial No. 651,094. (No model.)

To all whmn it may concern:

Be it known that I, THOMAS A. DOBBINS, residing at Martins Ferry, in the county of Belmont and State of Ohio, have invented a new and Improved Machine for Separating Laminated Packs, of which the following is a specification.

This invention relates to improvements in the manufacture of tin plates 5 and it particularly refers to means for mechanically separating the sheet-metal packs which heretofore have been separated by hand.

In the manufacture of sheet-metal packs after the pack has been heated, rolled, reheated, and sheared to its proper size the several sheets are usually separated by first bending down one edge of the laminated pack to cause a partial separation thereof sufficient to enable the operator to pull the several sheets apart. This separation has been found expensive, slow, and very unsatisfactory, es-' pecially so when the sheets are so pressed or stuck together that in the separation thereof their faces will become scaled, roughened, and broken in such a way as torender the sheets either of a very poor quality or entirely useless. Machines have been provided by which the separation is effected mechanically-as, for example, corrugated rolls arranged in pairs, through which the sheet-pack passes, which serve to bend or crimp the pack sheet transversely, so as to cause the adhering faces to separate, and straight-faced rolls which flatten out the sheet-pack after it has passed through the corrugated rolls.

My invention also embodies the use of corrugated and flattening rolls; but it has such rolls arranged to engage the pack, corrugate or crimp the same in the direction of its length or movement through the rolls, and subjecting the sheet alternately to a crimping or cor rugating and then a straightening pressure, beginning at the edges and working toward the center of the pack, so that when the center is crimped or corrugated the other portions of each side will have received a crimping and flattening action, so that all of the sheets in the pack will be gradually separated from the edges inward before they pass to the final flattening or straightening roll.

This invention also comprehends the construction of a machine having corrugatingrolls so arranged as to engage the sheet-pack in such a manner as to give it a twist strain simultaneous with the corrugating action,

whereby the separation of the sheets will be positive, quickly, and uni- Figure 1 is a side elevation of my improved separating-machine. Fig. 2 is a top plan view thereof. Fig. 3 is a front end view. Fig. 4: is'a rear end view. Fig. 5 is a transverse section taken on the line 5 5 of Fig. 1. Fig. 6 is a detail view of the rolls N0. 3. Fig. 7 is a similar View of rolls No. 16. Figs. 8, 9, 10, and 11 are diagrams illustrating the different shapes the pack assumes as it passes through the machine, and Fig. 12 is a detail section hereinafter referred to. Figs. 13 and 14 are views of a modified form of my invention. Fig. 15 is'a diagram hereinafter referred to.

T In the practical construction the apparatus consists in a frame 1,0f suitable strength,hav-

.ing a series of journal-ways 2 to receive the bones ofthe several rolls, which are arranged in pairs, the upper ones of which are held for vertical adjustment in the ways and pressed to the adjusted positions by the set-screws 3.

In the preferred form of my machine I employ seventeen pairs of rolls, it being, however, understood that a greater or less number maybe used. Each pair of rolls is geared together and is driven by a drive-shaft i, journaled'in brackets 5 5 on the side of the main frame, which has a series of worm-gears 5 5, which mesh with the worm-wheels on the shaft of the lower rolls of each set.

The first or front pair of rolls 6 6, which I term the receivers, have a fiat peripheral face their full length and serve as combined grip and feed rolls as they pass the pack to the second pair of rolls a, the construction of which is best shown in Fig. 5, byreference to which it will be seen th'euppe'r roll is of a reduced diameter nearly its entire length and the ends thereof formed with convexe'dam nular flanges a, operating over the concaved reduced ends a of the lower roll, the body of which is of the same diameter as the front rolls.

So far as described it will be readily understood that as the pack passes from the front rolls through the rolls a the outer edges will be crimped or bent to shape shown in diagram Fig. 8, the ends in this instance being bent down. After the partially-bent pack leaves rolls a it enters between the rolls Z), which, so far as relates to their diameters, are reversely arranged to the rolls a-21 e., the lower one I) has the largest diameter, while the upper has the smallest diameter. The'upper roll b in this case has the concaved annular projection 12 while the lower one has the convexed flange 12 The concavo-convexed portions of the rolls 6 are located somewhat farther inward toward the center of the roll than the similar portions on the rolls a, the purpose of which is twofold: first, to engage and corrugate the pack at a point inside of its previous crimp or corrugation, and, second, to provide the rolls Z) with a straight outer surface N, which engages the previously crimped or corrugated edge of the pack and flattens out that part as the second corrugations or crimps are applied thereto. By reversing the arrangement of the rolls 1) the sheet-pack has its body portion bent downward, so the ends will be uppermost, as shown in Fig. 9.

In the manufacture of sheet-metal laminated packs the pack of sheets is usually cut fourteen or twenty-eight inches long. In the construction of my machine the rolls are so spaced apart that at least two sets of rolls will engage the pack. This construction is of importance, as it provides means for imparting a twist strain on the pack as it passes from i one set of rolls to the other. Thus should-the pack be engaged by rolls a and I) (see Fig. 12) it is manifest that as the rolls a engage and bend the body of the pack upward and crimp or corrugate the edges at the outer edge and as the rolls Z9 bend the body of the pack upward and corrugates it at a point inside of the first corrugations an irregular twist strain will be effected, which serves to materially aid in the complete separation of the sheets at the point of corrugation, this twist strain being found especially useful in the separation of sheets which are closely stuck together, as it effects a creeping action of the sheets and causes them to positively separate without danger of tearing their faces. After the pack passes from the rolls b it is successively engaged by the rolls 0 d e fg h 71 j Z m '17, 0, which are each constructed similar to the rolls a 19, each successive pair of rolls having their concavo-convexed faces disposed progressively nearer their center, so that the pack will receive at each successive contact with the several sets of rolls a crimping or eorrugating pressure at a point nearer its center, so that when it passes out of the last set of ZL'CODVGXGd face, whereby a continuous flat pressing-surface is provided, which serves to press the sheets out in the shape shown in Fig. 11, it being understood that as they leave the rolls 7 7 they can be delivered onto a suitable chute or conveyer, the several laminae sheets at this time being completely separated.

My invention difiers from the other form of machine hereinbefore referred to in that the rolls are arranged to bend the sheets alternately downward and upward and in successsive lines and beginning at the edges and Working inward and pressing out flat the first corrugation or bend as the next corrugation or bend is being made, my peculiar formation of rolls also serving to impart an irregular twist strain on the sheets to further facilitate their separation.

From the foregoing description, taken in connection with the accompanying drawings, it is thought the advantages of myinvcntion will readily appear.

It will be seen that in use a number of packs can be passing through the machine at one time, the capacity of the machine being limited only by the feed of the packs to the front rolls.

In use all packs will be thoroughly separated with practically no waste, and as the successive bending and flatteningof the sheets serves to loosen the scale it is manifest that I after the pack has passed through the entire machine the bulk of the scale will have been 3 removed.

In Figs. 13, 14, and 15 is shown a modified form of separatingrolls. In this case the rolls, beginning with e, have double annular flanges. \Vhen this latter form of rolls is used, the pack successively assumes the forms illustrated in Fig. 15; In this form of rolls they are arranged to bend the pack reversely, as in the other form. The advantage of making the rolls with a double flange is that it imparts a more complete corrugation to the pack and serves to more effectively remove the scale. This form of rolls is also preferable for separating very heavy packs.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-- 1. A machine for separating laminated packs, comprising mechanism for moving the pack forward and bending it longitudinally as it moves forward at different points successively, as set forth.

2. A machine for separating laminated packs, comprising mechanism for moving the pack forward, bending it successively at different points and flattening at a previouslymade bent portion as it receives a second bend, as set forth.

IIO

3. A machine for separating laminated packs, comprising mechanism for moving the pack forward and bending it longitudinally at different points successively and alternately in opposite directions, as specified.

' ers to the last, substantially as shown and for the purposes described.

5. A machine for separating laminated packs, comprising a suitable frame, a series of rollers arranged in pairs journaled therein, each pair having annular flanges to engage and bend the pack longitudinally, the space between the flanges in the rollers gradually decreasing on each pair, from the foremost pair to the last one, the said annular flanges being arranged alternately on each intermediate pair of rollers, whereby the pack will be alternately bent forward and downward, substantially as shown and for the purposes described.

6. A machine for separating laminated packs, comprising a suitable frame, a series of rollers arranged in pairs having means for corrugating or crimping the pack as it passes therebetween, such crimping means on each pair of rollers being successively arranged to engage the pack at different points toward the center, and a pair of straight rollers arranged to receive the pack from the last pair of bending or corrugating rollers, substantially as shown and for the purposes described.

7. A machine for separating laminated packs, comprising a suitable frame, apair of straight face rollers at the front end, a pair of flat rollers at the rear end, a series of intermediate rollers arranged in pairs, each pair having annular flanges for engaging and bending the pack, the space between. the

flanges of each pair of rollers gradually decreasing from the firstroller to the rear one, said rollers having flattening portions opposing the previous pair of rollers, substantially as shown and described.

8. In a machine for separating laminated packs, substantially as described, a pair of presser-rolls having annular portions adapt ed to engage and corrugate or bend the pack longitudinally as it passes therebetween, a second pair of rolls having annular portions disposed inside of the annular portions of the preceding rolls, adapted to engage and corrugate or bend the pack, and having flat pressed portions in line with the annular portions of the preceding rolls, all being arranged substantially as shown and for the purposes described.

THOS. A. DOBBINS. Witnesses: I B. F. AULT, W. M. LUProN. 

